Commands

Keep huge shell output out of the context window. A Bash result over a threshold is saved to a file and Claude gets its head and tail plus a slice tool to grep or page the rest on demand.

Classic 75-ball bingo, you against Claude. Numbers are called, you mark your card and shout Bingo first; Claude plays a card of its own and claims one call late, so you get a fair window. Zero tokens.

Stop Claude from retrying the same failing shell command over and over. After N identical failures the next attempt is held, and you choose: stop, or try once more.

Connect Four against Claude, in a pane. Press a column's digit to drop a disc; Claude answers in half a second at three levels, from beatable to a seven-move lookahead. Zero tokens.

Copy Claude's last reply, or its last code block, to the clipboard as clean Markdown with /copy, with no terminal indentation or trailing spaces.

Play a sound and post a desktop notification when Claude finishes a turn or needs you to answer a question or a permission prompt.

The Chrome dinosaur runner in a pane. Press w to jump the cacti; the ground speeds up as you go, and your best distance is kept. Zero tokens.

Limit which paths Claude may edit in a project with one /fence command. Edits outside the fence are refused with a reason Claude can act on.

2048 in a pane. Slide tiles with w, a, s and d, merge equal numbers, reach 2048. One undo, a best score that survives restarts, and a board that replays from its seed. Zero tokens.

Choose which MCP tools and subagent types Claude sees, per project. A pane lists every server and tool with the size of its description; defer or hide the ones this repo never needs and stop paying for them on every request.

Know whether your auto-memory index loaded whole. Reports the index's size against a limit you set at every session start, names the entries past the cut, and warns when a session pushes it over.

Memory pairs in a pane. Sixteen face-down cards, eight matching pairs; press a card's letter to turn it, find its twin, finish in as few turns and as little time as you can. Best of each kept. Zero tokens.

Pin instructions that survive compaction, /clear, and restarts. /pin saves a rule for this project and every prompt carries the pinned list as context Claude reads.

Hold npm, pnpm, yarn, pip, uv, and cargo installs of packages that don't exist, are brand new, or are barely downloaded, with the registry facts in the question. Catches hallucinated and typosquat packages before they land.

Run the project's tests after any turn that edited files, print pass or fail under Claude's answer, and send the failure back to Claude with one /fix command.

Stop Claude using cat, grep, find, and sed in Bash when the Read, Grep, and Glob tools fit. Each redirected call saves a permission prompt and keeps raw shell output out of context.

Put the file path on every Read, Edit, Write, Glob, and Grep row in the transcript, so you never expand a row just to learn which file it touched.

Snake in a pane. Steer with w, a, s and d, eat the food, don't hit the walls or yourself. Pause with p, pick the speed, high score kept. Zero tokens.

Your day, written for you. Every turn is logged; /standup turns today's work across every session on the machine into a three-bullet update, or a Markdown file.

Enforce the style rules Claude keeps ignoring: banned words and phrases, a comment-density cap on added code, and files that must not gain comments. Rules live in .claude/style-cop.md and are both shown to Claude and enforced on edits.

Sudoku in a pane. Three levels with one solution each, move with w a s d, type a digit, undo, a hint when stuck, and a clock that pauses when the pane closes. Best time per level kept. Zero tokens.

Stop secrets leaving the machine. Holds an edit or command that writes an API key, a private key, or a credential literal, a command that reads a secret file and talks to the network, and a git commit whose staged changes contain a secret. Refuses by default.

Check what Claude claims against what it ran. When an answer says the tests pass, the build is clean, or something was committed, a line under it says whether a matching command actually ran this turn and succeeded.

Typing race in a pane. A line of code appears, you type it; every character colors right or wrong as you go, and Enter scores words per minute and accuracy. Last ten runs and your best kept. Zero tokens.